Derivation and Application of Equivalent Circuits to Model Common-Mode Current in Microgrids

Brovont, Aaron D.; Pekarek, Steven

doi:10.1109/jestpe.2016.2642835

Cited by 48 publications

(11 citation statements)

References 33 publications

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“…The current source feeding the converter biases the circuit to its nominal dc operating operating point. The CM/DM voltages/currents of the converter can be expressed in terms of terminal quantities using [13], [25]:…”

Section: Thévenin Cm/dm Equivalent Circuitsmentioning

confidence: 99%

“…A host of researchers have considered methods to model the CM behavior of power converters. In many cases, the models are described using common-mode equivalent circuits (CMECs) to represent switching-induced CM excitation and the parasitic conduction paths to ground [9]- [13]. Although valuable, such models require access to converter internal hardware and knowledge of potential parasitic paths.…”

Section: Introductionmentioning

confidence: 99%

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Thévenin Equivalent Circuits for Modeling Coupled Common/Differential-Mode Behavior in Power Electronic Systems

Donnelly¹,

Pekarek

Fudge

et al. 2021

IEEE Open J. Power Energy

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Modeling the unintended common-and differentialmode (CM and DM) behavior of multi-converter power electronic-based systems can be a challenge. Chief among the issues is the need for detailed knowledge of the converter hardware to determine model parameters. In this paper, a focus is on the derivation of Thévenin-based models that only require characterization at the converter terminals. Periodic linear time varying system analysis is first used to derive and consider the applicability such models. Subsequently, methods to experimentally characterize Thévenin parameters are established. The modeling approach is then used to establish worst-case predictions of CM/DM behavior of a microgrid which is validated using both time-domain simulation and hardware experiment.

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Section: Thévenin Cm/dm Equivalent Circuitsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Thévenin Equivalent Circuits for Modeling Coupled Common/Differential-Mode Behavior in Power Electronic Systems

Donnelly¹,

Pekarek

Fudge

et al. 2021

IEEE Open J. Power Energy

Self Cite

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“…On the other hand, if current flows through C cm (and returns through the Z cm 's), then i cm = 0. Following the techniques given in [6], a DCMEC of the inverter and its CM load can be constructed as shown in Fig. 2(b).…”

Section: A Backgroundmentioning

confidence: 99%

“…(The circumflex notation is used to indicate that these are temporary quantities.) In order to proceed, Kron reduction is used to eliminate node 3 , yielding:î src,k =Ŷ kvk (6) where subscript k indicates Kron reduced quantities. Solv-…”

Section: B Tcmec Analytical Demonstrationmentioning

confidence: 99%

“…Researchers have since applied DCMECs to other types of PE converters (for a recent example, see [5]). A formal method to construct DCMECs and assemble them for system analysis is described in [6]. A challenge in applying the DCMEC approach is that it requires significant knowledge of each converter design to correctly identify parasitic paths.…”

Section: Introductionmentioning

confidence: 99%

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Thévenin Equivalent Circuits for Modeling Common-Mode Behavior in Power Electronic Systems

Donnelly

Pekarek

Fudge³

et al. 2020

IEEE Open J. Power Energy

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Modeling the common-mode behavior of power electronic systems can be a challenge. This research aims to simplify the process by developing a modeling approach based on Thévenin common-mode equivalent circuits. The Thévenin common-mode equivalent circuits prove to be both straightforward to construct and reliable in predicting worst-case common-mode behavior. In this paper, a theoretical understanding of the Thévenin-based modeling approach is first provided. Subsequently, methods to characterize the Thévenin parameters are established. The modeling approach is then validated experimentally on a dc micro-grid. INDEX TERMS Electromagnetic interference (EMI), leakage current, common-mode (CM), Thevenin equivalent circuit, micro-grid.

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Research on a High Step-Up Boost Converter

et al. 2020

Advances in Intelligent Systems and Computing

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Derivation and Application of Equivalent Circuits to Model Common-Mode Current in Microgrids

Cited by 48 publications

References 33 publications

Thévenin Equivalent Circuits for Modeling Coupled Common/Differential-Mode Behavior in Power Electronic Systems

Thévenin Equivalent Circuits for Modeling Coupled Common/Differential-Mode Behavior in Power Electronic Systems

Thévenin Equivalent Circuits for Modeling Common-Mode Behavior in Power Electronic Systems

Research on a High Step-Up Boost Converter

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